EP 0412454 B1 19940216 - Blower.
Title (en)
Blower.
Title (de)
Gebläse.
Title (fr)
Ventilateur.
Publication
Application
Priority
JP 20488189 A 19890809
Abstract (en)
[origin: EP0412454A1] A blower comprises an impeller (1) which can function to raise the pressure of a fluid and delivers it; means (2) for driving the impeller (1); and a fan casing (3A) which includes a fluid path to inspire the fluid from the outside and deliver it to the outside through the impeller (1); characterized in that the fan casing (3A) is at least partly formed by a hard porous structural unit (10) whose specific gravity is continuously changed in at least one of the direction of thickness and a direction of surface.
IPC 1-7
IPC 8 full level
F04D 29/42 (2006.01); F04D 29/52 (2006.01); F04D 29/66 (2006.01)
CPC (source: EP KR US)
F04D 29/40 (2013.01 - KR); F04D 29/4206 (2013.01 - EP US); F04D 29/522 (2013.01 - EP US); F04D 29/664 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0412454 A1 19910213; EP 0412454 B1 19940216; DE 69006657 D1 19940324; DE 69006657 T2 19940908; JP 2630652 B2 19970716; JP H0370900 A 19910326; KR 910004939 A 19910329; KR 940006868 B1 19940728; US 5110258 A 19920505
DOCDB simple family (application)
EP 90114957 A 19900803; DE 69006657 T 19900803; JP 20488189 A 19890809; KR 900010949 A 19900719; US 56168590 A 19900802